HT49R70A-1
8-Bit MicrocontrollerHT49R70A-1
8-Bit Microcontroller
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Manufacturer Part # : HT49R70A-1
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Package/Case: QFP100
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Brand: Micron
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Product Categories : Microcontrollers
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HT49R70A-1 DataSheet

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Interested Parts
HT49R70A-1 Description
The HT49R70A-1 is an 8-bit microcontroller from Holtek Semiconductor Inc, designed for embedded control and processing applications. This device features a 2Kx13 OTP ROM, 64x8 RAM, and various peripherals such as 5 channels of PWM output, 16-bit timer/counter, 10-bit A/D converter, brown-out detection circuit, watchdog timer, and low voltage detector.
Pin Details
The HT49R70A-1 is a microcontroller with 100 pins for half-duplex communication. It includes pins for receiving, driving, and enabling signals, along with power supply and ground connections.
Pin configuration
- Pin 1 (VCC): Positive Power Supply
- Pin 2 (GND): Ground
- Pin 3 (P0.0): Port 0 Pin 0
- Pin 4 (P0.1): Port 0 Pin 1
- Pin 5 (P0.2): Port 0 Pin 2
- Pin 100 (INT): Interrupt Input
Features
- 8-bit microcontroller: Offers high-performance processing capabilities for embedded control applications.
- 2Kx13 OTP ROM: Provides a large amount of program memory for storing firmware and data.
- 64x8 RAM: Offers sufficient data storage capacity for various applications.
- PWM output: Enables the generation of pulse-width modulated signals for controlling DC motors, LEDs, and other devices.
- Timer/counter: Provides a high-resolution timer for measuring time intervals and counting events.
- A/D converter: Enables analog-to-digital conversion for reading sensor data and controlling external devices.
Applications
The HT49R70A-1 is suitable for various embedded control applications, including industrial automation, automotive systems, medical devices, and consumer electronics.
Where to Use:
This microcontroller can be used in a wide range of applications where high-performance processing, data storage, and peripheral interfaces are required. Some examples include:
- Industrial control systems
- Automotive electronics
- Medical devices
- Consumer electronics
Manufacturer
The HT49R70A-1 is manufactured by Holtek Semiconductor Inc, a leading provider of microcontrollers and other semiconductor components.
Packages
The HT49R70A-1 comes in a QFN100 package, which offers a compact and efficient solution for integrating the microcontroller into electronic circuits.
Equivalent Parts of HT49R70A-1
- HT48R40A: A comparable 8-bit microcontroller from Holtek Semiconductor Inc with similar features and performance.
- ATmega328P: An alternative 8-bit microcontroller from Atmel Corporation that offers equivalent functionality.

Specifications
The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.
Part Life Cycle Code | Obsolete | Part Package Code | QFP |
Pin Count ! | 100 | Reach Compliance Code | compliant |
HTS Code ! | 8542.31.00.01 | Has ADC | NO |
Bit Size | 8 | Clock Frequency-Max | 8 MHz |
DAC Channels | NO | DMA Channels | NO |
JESD-30 Code | R-PQFP-G100 | Length | 20 mm |
Number of I/O Lines | 24 | Number of Terminals | 100 |
Operating Temperature-Max | 85 °C | Operating Temperature-Min | -40 °C |
PWM Channels | NO | Package Body Material | PLASTIC/EPOXY |
Package Code | QFP | Package Equivalence Code | QFP100,.75X.99 |
Package Shape | RECTANGULAR | Package Style | FLATPACK |
Power Supplies ! | 3/5 V | Qualification Status ! | Not Qualified |
RAM (bytes) | 224 | ROM (words) | 8192 |
ROM Programmability | UVPROM | Speed | 8 MHz |
Supply Current-Max | 5 mA | Supply Voltage-Max | 5.5 V |
Supply Voltage-Min | 3.3 V | Supply Voltage-Nom | 5 V |
Surface Mount ! | YES | Technology | CMOS |
Temperature Grade ! | INDUSTRIAL | Terminal Form ! | GULL WING |
Terminal Pitch ! | 0.65 mm | Terminal Position | QUAD |
Width | 14 mm |
Datasheet PDF
Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.
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Price details
Prices listed do not include VAT.
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